Should a nurse incorporate? Only if the income is genuinely a business

Your T4 cannot move into a corporation

Employment income belongs to the person who earned it — full stop. A staff nurse cannot redirect hospital pay through a corporation, and no restructuring makes that legal after the fact. Where this question really arises is with staffing agencies: some offer a higher hourly rate if you invoice through your own corporation instead of joining payroll. Understand what is actually being traded. The agency sheds CPP and EI contributions, vacation pay, and often WSIB coverage; you take on a corporation's costs plus a classification question CRA gets to answer later, with interest.

The personal services business trap

CRA calls an incorporated worker who would be an employee without the corporation a personal services business, and the consequences are deliberately punitive: no small business deduction, no general rate reduction, an extra federal tax on top — about 44.5% combined in Ontario — and deductions limited essentially to salary the corporation pays you. CRA has run review projects on exactly these staffing arrangements, including in healthcare. The badges that matter: one client, shifts scheduled by the facility, their equipment and their patients, no chance of profit or loss beyond your hourly rate.

Where a nursing professional corporation genuinely works

The last row of that table describes real people. Nurse practitioners running independent clinics or NP-led services. Foot-care nurses with rosters of retirement homes and house calls. Occupational health nurses contracting to several employers. Nurse educators, legal nurse consultants, and cosmetic nurses operating their own practices under proper medical directives. What these share is business substance — multiple clients, control over schedule and methods, real expenses, real downside — and, ideally, earnings beyond what the household spends, because retained profit taxed near 12.2% is the entire financial case.

The college layer is non-negotiable: a corporation through which nursing is practised needs a certificate of authorization from the CNO, its name must follow the college's format, and shares must be held by CNO members — no spouse, no family trust, since Ontario's family-share exception stops at physicians and dentists. Application details and fees are the college's to set and revise, so confirm current requirements with the CNO before filing. Liability protection is not part of the bargain either; your practice insurance and accountability are untouched. Once the corporation exists, how you pay yourself becomes an annual decision — salary builds RRSP room and CPP but demands a payroll account and remittances, dividends skip both — and the right blend shifts with your age, debt, and savings rate.

HST for nurses: mostly exempt, with edges

Nursing services rendered to individuals within a nurse-patient relationship are GST/HST-exempt, so many nursing practices never register. The edges are where trouble hides: consulting to businesses, teaching engagements, medico-legal work, and purely cosmetic services are generally taxable, and once that side passes $30,000 in four rolling quarters the corporation must register and charge HST on it. A practice mixing exempt care with taxable consulting needs its invoicing split correctly from the start.

Timing, sequence, and the travel-nursing wrinkle

Do not incorporate for a single agency contract or in your first year of independent work — prove the business first, then structure it. When the time comes, the order is articles under the OBCA, the CNO certificate of authorization, then bank and CRA accounts before the corporation invoices anyone; our incorporation and compliance service runs the sequence and the annual upkeep. And if US travel nursing on a TN visa is on your horizon, leave the corporation out of that plan — US hospitals engage travel nurses personally through US agencies on W-2s, and the residency and dual-filing questions that follow are personal ones. We map them on the cross-border tax page for nurses.

Source: College of Nurses of Ontario.